Effect of Cu2+ on antioxidant of EGCG

DOI

10.2991/emcs-16.2016.203How to use a DOI?

Keywords

EGCG; Antioxidant; Cu2+; Concentration-dependent

Abstract

( )-Epigallocatechin-3-gallate (EGCG), a major compound of tea polyphenols it has exhibited an antioxidant activity in previous studies. Cu2+ can be a center ion in complex reaction with EGCG and affect its antioxidant capacity as well. To investigate the effects on antioxidation of EGCG after add Cu2+ the pyrogallic acid is used as a reagent to test the oxidation which was added in liquid with different concentration gradent and proportions of Cu2+and EGCG. The result showed no significant P=0.95 effects when concentration of EGCG and Cu2+ are 5 mol·L-1 and 10 mol·L-1, respectively. However, Cu2+ decreased the antioxidant activity of EGCG at 50 mol·L-1 while increased the antioxidant capacity at 100 mol·L-1. Cu2+ has no obvious effect on antioxidant capacity of EGCG before 50 minutes but improved the antioxidant of EGCG thereafter at 250 mol·L-1 while inhabited the antioxidant of EGCG in first 90 minutes at 500 mol·L-1 and improved the antioxidant thereafter. Different concentrations of EGCG have a greate difference in antioxidant property, it present obvious concentration-dependent. Furthermore, the data of antixidant dynamics of the different test system are also given in the study.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ma Liming
AU  - Chen Songsong
PY  - 2016/01
DA  - 2016/01
TI  - Effect of Cu2+ on antioxidant of EGCG
BT  - Proceedings of the 2016 International Conference on Education, Management, Computer and Society
PB  - Atlantis Press
SP  - 829
EP  - 833
SN  - 2352-538X
UR  - https://doi.org/10.2991/emcs-16.2016.203
DO  - 10.2991/emcs-16.2016.203
ID  - Liming2016/01
ER  -